Hi, thanks for reporting this issue. I have sent you a PM with instructions and a link to a new Aered installer that will help us see what the problem is. It would be great if you could try it out and report back. Thanks.

It seems that Antti's upgrade from OS X 10.12 to 10.13 broke the OpenGL accumulation buffer support which Aered relies on for nice antialiased rendering of the music notation. He Mac has an NVIDIA GeForce GTX 680MX.

We have tested it on another Mac running 10.13 with an Intel graphics card and it works fine but if others are also seeing a crash at startup please report it here and let us know what graphics card you have.